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US 2003/0197674 A1Published application
Color/mono switched display
AssigneeKopin Corporation
InventorFrederick P. Herrmann
Life of this patent
Estimating the term…
Abstract
A color sequential display operative in one of two alternate modes. The first mode is a color sequential mode in which primary color images are displayed in successive frames while respective background light sources are simultaneously flashed on the display. The second mode is a monochrome mode in which the luminance Y signal is displayed in successive frames along with flashes of background white light.
Claims13
A color sequential display system operable in a monochrome mode comprising:
- a) a video signal source which generates a composite video signal containing a luminance signal Ys and primary color signals Rs, Bs, and Gs;
- b) a light source adapted to flash light of each of the primary colors R, B, or G or a white light W;
- c) a display optically coupled to the light source, said display having an array for displaying (i) an image of the Rs, Bs, and Gs signals in succession at a rate of 150-240 Hz in a color sequential mode or (ii) displaying an image of the luminance signal Ys in succession at a rate of 50-60 Hz in a monochrome mode;
- and
- d) a control for the light sources which, in the color sequential mode, flashes light of each of the primary colors in synchronism with the respective image display of the Rs, Bs & Gs signals and in the monochrome mode, flashes the white light or light of all of the primary colors simultaneously in synchronism with the display of the luminance signal Ys.
2 more elements
A color sequential display system comprising:
- a) a source of composite video signals having luminance and color components;
- b) a light source comprising a plurality of light emitting devices adapted to emit one each of the primary colors and white light;
- c) a sequential color circuit coupled between the source and a display to generate a plurality of color images in temporal sequence, the sequential color circuit controlling a sequence of colored image frames formed on the display from the luminance part of the composite video signal;
- and
- d) a monochrome circuit alternatively coupled between the display and light source which in a first mode (i) simultaneously generates each of the primary colors or in a second mode (ii) generates only a white color.
2 more elements
A method of operating a color sequential display system in a monochrome mode comprising:
- a) receiving a composite video signal containing a luminance signal Yx and primary color signals Rs, Bs, and Gs;
- b) generating light of each of the primary colors R, B, or G and a white light W;
- c) displaying (i) an image of the Rs, Bs, and Gs signals in succession at a rate of N cycles per second in a color sequential mode or (ii) displaying an image of the luminance signal YS in succession at a rate of M cycles per second in a monochrome mode;
- and
- d) in the color sequential mode flashing light of each of the primary colors in synchronism with the respective image display of the Rs, Bs & Gs signals and in the monochrome mode, flashing the white light or light of all of the primary colors simultaneously in synchronism with the display of the luminance signal Ys.
2 more elements
A color sequential display system operable in a monochrome mode comprising:
- a) an interface for receiving a composite video signal containing a luminance signal Ys and primary color signals Rs, Bs, and Gs;
- b) a light source coupled to the display and optically adapted to generate light of each of the primary colors R, B, or G and a white light W;
- c) said display having an array for displaying (i) an image of the Rs, Bs, and Gs signals in succession at a rate of N cycles per second in a color sequential mode or (ii) displaying an image of the luminance signal Ys in succession at a rate of M cycles per second in a monochrome mode;
- and
- d) a control for the light sources which, in the color sequential mode, flashes light of each of the primary colors in synchronism with the respective image display of the Rs, Bs & Gs signals and in the monochrome mode, flashes of the white light or light of all of the primary colors simultaneously in synchronism with the display of the luminance signal Ys.
2 more elements
Dependencies are inferred from the claim text.